CNBC update: Boston bomber passed citizenship test

12:30 PM ET Mon, 29 Feb 2016

CNBC's Sue Herera reports the latest headlines including Defense Secretary Ashton Carter says the U.S. and its allies are gaining momentum in the fight against ISIS; Boston bomber Tamerlan Tsarnaev passed his citizenship test and denied terror links months before the attack; and New York prison guard takes a plea deal on charges of aiding the escape of 2 inmates.